<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Login</title>
</head>
<body>
<!-- http:
 get  获取数据
 post 提交数据
 put  修改数据
 delete 删除数据
 -->
<form action="login3" method="post">
    <input type="text" name="username" placeholder="Username">
    <input type="password" name="password" placeholder="Password">
    <input type="text" name="captcha" id="">
    <img src="captcha" alt="">
    <input type="submit" value="Login" />
</form>
</body>
</html>